Graphics.Rendering.OpenGL.GL.IOState

This is a purely internal module for an IO monad with a pointer as an additional state, basically a StateT (Ptr s) IO a.

Documentation

newtype IOState s a

Constructors

IOState

Fields

runIOState :: Ptr s -> IO (a, Ptr s)

Instances

Monad (IOState s)

Functor (IOState s)

getIOState :: IOState s (Ptr s)

peekIOState :: Storable a => IOState a a

evalIOState :: IOState s a -> Ptr s -> IO a

nTimes :: Integral a => a -> IOState b c -> IOState b [c]